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HIGH

Apache Neethi: Policy Normalization Unbounded Resource Allocation DoS

Published May 1, 2026

Description

Apache Neethi is vulnerable to a Denial of Service attack through algorithmic complexity in policy normalization. Specially crafted WS-Policy documents can trigger an exponential Cartesian cross-product expansion during the normalization process, causing unbounded memory allocation that exhausts the JVM heap. This occurs when the normalization process generates an excessive number of policy alternatives without bounds, leading to runtime memory exhaustion.

Users should upgrade to 3.2.2 which limits the maximum number of normalized policy alternatives.

Affected products

Remediation

Red Hat statement

This flaw is rated Moderate because Apache Neethi, as used in Red Hat products, is susceptible to a denial of service. Remote attackers can provide malicious WS-Policy documents, leading to an algorithmic complexity issue during policy normalization. This results in unbounded memory allocation, exhausting the JVM heap and causing service unavailability. In order to exploit this vulnerability, the attack should have enough privileges in the targeted system to include the maliciously crafted policy document or trick the user to consume it.

Red Hat mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

References (8)

Change history (0)

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Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apache
Published May 1, 2026
Updated May 1, 2026
Reserved Apr 27, 2026
CISA Vulnrichment
Updated May 1, 2026
NVD
Status Analyzed
Modified Jun 17, 2026
Red Hat
Severity Moderate
Public date May 1, 2026
ENISA EUVD
Assigner apache
Published May 1, 2026
Updated May 1, 2026
Exploited since n/a
EUVD-2026-26485 GHSA-G36M-9G3M-2VMP